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  3. Electronic computer speeds are restricted not only by the speed of el

Electronic computer speeds are restricted not only by the speed of el

游客2025-02-22  46
问题            Electronic computer speeds are restricted not only by the speed of electrons
       in matter but also by the escalating density of interconnections necessary to
       connect the electronic gates on microchips. Electrical engineers and physicists
Line    have been developing and augmenting the technologies of analog and digital
(5)     optical computing, in which the information is primarily carried by photons
       rather than by electrons. Optical computing could, in principle, generate much
       higher computer speeds, but one of the problems it has encountered lies in
       accuracy, for these devices have practical limits of 8 to 11 bits of accuracy in
       basic operations.  Recent research  has evinced  that digital  partitioning
(10)   algorithms in tandem with error-correction codes, can substantially enhance the
       accuracy of optical computing operations. In the near term optical computers
       will most likely be hybrid optical/electronic systems that preprocess input data
       for computation and post-process output data via electronic circuits, but
       nevertheless, the prospect of all-optical computing remains highly attractive. [br] The passage suggests that the author would most probably agree with which of the following assessments of optical computing in its present form?
选项 A、Although the future of optical computing is impressive, its applications are too limited in scope to justify much optimism.
B、The outlook of its development is positive on the surface, but many claims made about it are misleading.
C、Efforts to develop the technology have been sufficiently positive to maintain the interest of electrical engineers and physicists.
D、Because of design flaws, the task of developing optical computing will require greater resources than are presently available.
E、The state of development of optical computing is too contradictory to allow for an easy assessment of its future.
答案 C
解析
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